Core-box.



J. W. L. KERR 6/: G. V. NEESON.

GORE BOX.

APPLICATION FILED APR.8,1912.

' Patented Oct. 7

INVENTORS wUL/www v. mm

' 1TB SES FQE.

JAMES W. L. KERR, OF WEST VIEW, AND CHAR-LES V. NEESON, OF PITTSBURGH, PENN- SYLVANIA, ASSIGNORS TO LAJVRENCEVILLE BRONZE 00., OF PITTSBURGH, PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.

CORE-BOX.

intense.

Application filed April 8, 1912.

To all whom it may concern.

Be it known that we, JAMES W. L. KERR, residing at lVest View, in the county of Allegheny and State of Pennsylvania, and Crmnnns V. NnEsoN, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, citizens of the United States have invented or discovered certain new and useful Improvements in Core-Boxes, of which improvements the following is a specification.

The invention described herein relates to certain improvements in the manufacture of cores, said improvements being more especially applicable to the manufacture of annular cores, such for example as are employed in casting twyer boxes, etc.

The invention is hereinafter more fully described and claimed.

In the accompanying drawing forming a part of this specification, Figure 1 is a sectional elwat-ion of our improved core box showing a core formed therein; Fig. 2 is a sectional plan view on a plane indicated by the line ll-TI Fig. 1; Figs. 3 and 4 are transverse sections on planes indicated by the line TIIHT and IVTV Fig. 2.

In the practice of our invention the lower end of the core box is provided with seats for the reception of blocks designed to support the venting tubes and core supporting anchors in proper position to be incorporated in and secured to the completed core. The lower portion of the core box consists of a plate 1 to which is secured the pattern 2 when formin annular cores such as shown. The plate 1 is provided with a recess or seat 3 for the reception of the hollow ring or annular drum at having an internal diameter slightly larger than the lower end of the pattern, so that the ring may be raised to strip the completed core from the pattern. The upper surface of the ring which is in fact the base or lower end of the core box serves as a support for the annular opened portion 5 of the box and also to close the lower end of the matrix in which the core is formed. The portion 5 is preferably centered on. the drum 4 by a removable sleeve 6 having a. portion of an internal diameter approximately equal to the external diameter of the drum and another portion of a diameter approximately equal to the external diameter of the member 5.

Specification of Letters Patent.

Patented Oct. 7, 1913.

Serial No. 689,268.

By reference to Fig. 1 it will be seen that the lower and larger portion of the pattern simply serves as a support for the upper portion or pattern proper, and that patterns varying as regards the diameter and shape and length of the pattern proper can be employed. Annular portions 5 varying as regards their internal diameter can also be employed thus permitting the formation of cores varying in external diameter using the same annular drum.

As shown and described in application Serial No. 682,384 filed March 8 1912, the perforated venting tubes 7 are secured to hollow stems S, which serve as means for supporting the core in proper position in the completed mold. These anchoring stems carrying the venting tubes are supported in inverted position during the formation of the cores by removable blocks 9. As shown in Figs. 1 and 2 the upper plate of the drum or ring 4 is radially notched and the lower plate is provided with suitably arranged ribs 10, to form seats for the blocks 9, which are held from radial movements by the lower portion of the pattern 2 and the ends of the radial notches in the upper plate of the drum. hen placed in position in the drum the upper surfaces are preferably on a level with the upper surface thereof. These blocks are provided with sockets 11 for the reception of the anchor stems 8. By reference to Figs. 1 and 2 it will be seen that the sockets 11 are nearer one end of the blocks than the other, so that by turning these blocks end for end they will serve to properly support the stems and venting pipes while forming cores varying in diameter. In order to increase the range of cores that may be formed the blocks are provided with additional sockets 12 which are reversely arranged in the blocks and differ as regards their positions relative to the ends of the blocks from the positions of the sockets 11. This construction of blocks permits of four changes of position of the anchor stems and venting tubes. Two changes can be obtained by using the socket 11 to support the stems by changing the blocks end for end as stated. By turning the blocks over so as to use the sockets 12 a third position can be had, and by changing the blocks end for end with the sockets 1 up a fourth position is provided.

order to protect the anchors and venting tubes from contact with the metal, the sockets are enlarged so that a sleeve of core material will be formed around the venting tubes, as clearly shown in Fig. 1.

We claim herein as our invention:

1. A core boX, having in combination a side portion, a base provided with seats, and independently movable blocks arranged in said seats and provided with means for supporting venting pipes in different posi tions in the core box.

2. A core box, having in combination, a side portion, a base provided with seats, and removable and reversible blocks adapted to fit in said seats and provided on opposite sides with differently located means, for engaging vent pipes.

3. A core boX, havlng 1n comblnatlon, a side portion, a base provided with seats, and removable blocks adapted to fit in said seats and provided with sockets for supporting the vent pipes and located at different distances from the aXis of the core box.

In testimony whereof, we have hereunto set our hands.

JAS. lV. L. KERR. CHARLES V. NEESON.

WVitnesses:

ALICE A. TRILL, THOMAS B. .ToYoE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

